Shop Assistant: Can I help you?

Mike: Yes. I want to get a {#blank#}1{#/blank#} of sneakers.

Shop Assistant: Which {#blank#}2{#/blank#} would you like?

Mike: Blue.

Shop Assistant: That's a nice colour.

Mike: May I {#blank#}3{#/blank#} them on?

Shop Assistant: Certainly.

Mike: They are comfortable.

Shop Assistant: They {#blank#}4{#/blank#} your shorts.

Mike: {#blank#}5{#/blank#} are they?

Shop Assistant: Twenty five.

Mike: I will {#blank#}6{#/blank#} them.

    You should go {#blank#}1{#/blank#} bed before 10 0'clock. Drink some milk {#blank#}2{#/blank#} you go to sleep. I'm sure you will sleep {#blank#}3{#/blank#} and get better soon.

    From then {#blank#}4{#/blank#}, Dan went to bed {#blank#}5{#/blank#} and soon he got better.

A：What's the {#blank#}1{#/blank#}, Kitty?

B：My eyes hurt. It's the {#blank#}2{#/blank#}from the traffic.

A：There's also a {#blank#}3{#/blank#}site. Look at the dust.

B：The workers {#blank#}4{#/blank#}burning rubbish there.

Look at the smoke from the fire.

A：The {#blank#}5{#/blank#}in Garden City is very dirty.

B：There's a lot of air pollution.